I took time off work to wait for the BT engineer to arrive. He ran a number of tests on the line but said he couldn’t find anything wrong but will check a few things at the exchange.

I went back to work and when I got home later that evening the broadband was off completely. After about half an hour of failing to get it to sync I reported the problem to Demon who said they couldn’t yet comment because BT hadn’t updated their notes. It came back on after about 50mins of being off.